WOD Wrecker Pull Up Band, Single Band, Green,

Do I go up in weight or down in weight if I want it to be harder? I am 5'1, weigh 112lbs and am wanting to work my way towards doing pull ups unassist

What is the guard band for?

Need to replace a broken Coobons 50 lbs band. Please send details. I don't want to order a full set?

I am a 5 ft petite/short person. Other bands have been too long or too short and I don't get the stretch I need. Will these work or me?